Advertisements
Advertisements
Question
How is ethylene prepared in laboratory? Give balanced equation and
procedure. How is the gas prepared and dried?
Advertisements
Solution
Ethylene is prepared in the laboratory by dehydration of ethyl alcohol.
Reaction:
\[\ce{CH3Ch2Oh ->[concH2SO4][170°C] CH2 = CH2 + H20}\]
Procedure:
Take one part of ethyl alcohol in a flask. Add two parts of concentrated
sulphuric acid and heat to 170°C.Ethylene is evolved and small amount of aluminium sulphate is also added to the flask to avoid frothing.
Gas is prepared by reacting ethyl alcohol in presence of sulphuric acid and is collected by downward displacement of water.
The gas is dried by passing the gas through sodium hydroxide solution.
APPEARS IN
RELATED QUESTIONS
Fill in the blank:
One of the products of combustion of organic compounds is
always__________
Give three uses of ethene.
Give two chemical tests to distinguish between ethane and ethyne .
Write the composition of the following:
Methylated spirit
A neutral compound'X' of molecular formula C2H60 on oxidation with
acidified potassium dichromate gives a compound 'Y' .Compound 'X' react
with 'Y' on warming in presence of conc.H2S04 to give a sweet smelling
substance 'Z'. What are 'X','Y', and'Z'? Give equations of the reaction
involved.
What is the special feature of the structure of:
(a) C2H2
(b) C2H4
The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:
Which forms methanoic acid on oxidation in the presence of copper at 200°C
Give reason as to why :
Almost 90% of all known compounds are organic in nature
Give reason for the following :
Hydrocarbons are excellent fuels
Using the structural formula, identify the functional group by circling it:
Dimethyl ether
